题解 | #网购#
网购
https://www.nowcoder.com/practice/5d7dfd405e5f4e4fbfdff6862c46b751
#include <stdlib.h>
int main() {
double a = 0.0;
int b, c, d;
b = c = d = 0;
scanf("%lf %d %d %d", &a, &b, &c, &d);
if (b == 11 && c == 11)
{
a *= 0.7;
}
else if (b == 12 && c == 12)
{
a *= 0.8;
}
a -= d * 50;
if (a <= 0)
a = 0;
printf("%.2lf", a);
return 0;
}
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